One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(17,18,22,25)(19,27,29,24)(20,21,26,23)(28,30,32,31)(1,3)(2,5)(4,8)(6,7)(9,10,13,16)(11,15,12,14)(17,19,22,29)(18,24,25,27)(20,28,26,32)(21,31,23,30)(2,6)(3,8)(9,11,13,12)(10,14,16,15)(17,20,23,18,22,26,21,25)(19,28,30,24,29,32,31,27)(2,6)(5,7)(18,25)(19,29)(20,26)(30,31) involution — undirected(9,12,13,11)(10,15,16,14)(17,21,22,23)(18,26,25,20)(19,30,29,31)(24,28,27,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.